InChI=1/C15H18N2O4/c18-14-4-2-1-3-13(14)16-15(19)10-7-11-5-8-12(9-6-11)17(20)21/h5-10,13-14,18H,1-4H2,(H,16,19)/b10-7+/t13-,14+/m0/s1/f/h16H 7E095BADBE2B97E8